Hinged electrode cup and methods of fabrication for medical grade electrochemical cells

a technology of electrochemical cells and hipped electrodes, applied in the field of hipped electrode cups and methods of fabricating medical grade electrochemical cells, can solve the problems of easy damage to the sheet, damage to the coil itself, and damage to the sheet during manual assembly, so as to improve the insertion of the electrode coil, reduce the possibility of damage to the coil during insertion, and facilitate the inspection of partially assembled components

Inactive Publication Date: 2006-10-05
MEDTRONIC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007] According to the present invention an improved insulator cup, or case liner, enhances electrode coil insertion by reducing the possibility of damage to the coil ...

Problems solved by technology

Unfortunately, the coiled electrode and the insulator cup itself are designed to occupy minimum space within the cell and thus possess dimensions that oftentimes result in damage during manual assembly.
For example, the coiled electrode oftentimes includes a commercially available separator sheet or envelope around the electrode and the sheet easily ...

Method used

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  • Hinged electrode cup and methods of fabrication for medical grade electrochemical cells
  • Hinged electrode cup and methods of fabrication for medical grade electrochemical cells
  • Hinged electrode cup and methods of fabrication for medical grade electrochemical cells

Examples

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Embodiment Construction

[0029] Referring now to FIG. 1, which depicts an exploded view of an exemplary prior art electrochemical cell which includes a case 20 and coiled electrode assembly 30. The case 20 is designed to enclose the electrode assembly 30 and be sealed by a case cover 60. As depicted the side 14 of the case 20 forms a generally arcuate shape while the opposing side 16 of the case 20 is preferably generally planar or prismatic. This construction provides a number of advantages including the ability to accommodate one of the curved or arcuate ends of a preferred coiled electrode assembly 30 but such a shape can be used when practicing the present invention (described hereinbelow). As also discussed below, the arcuate side 14 can nest within an arcuate edge of an implantable medical device such as an implantable cardioverter-defibrillator (ICD). When the arcuate side 14 is located within the edge of a device, the planar surface on the opposing side 16 faces inward to assist in the efficient use...

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PUM

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Abstract

According to the present invention an improved insulator cup, or case liner, enhances electrode coil insertion by reducing the possibility of damage to the coil during insertion, protects electrode and separator from laser radiation during welding, and eases manual inspection of partially assembled components, among other advantages. The improved insulator cup includes a mechanical joint, or hinge-like feature, which pivotably couples opposing parts of the cup and greatly enhances coiled electrode insertion and subsequent component inspection prior to sealing a cover member over an electrode assembly disposed within a housing. The mechanical joint can comprise additional parts that adhere to a divided insulator cup or can be formed as an integral part of an insulator cup (e.g., a linear area of reduced thickness, of apertures, and/or perforations, etc.).

Description

FIELD OF THE INVENTION [0001] The present invention relates to electrochemical cells; in particular, apparatus and methods for fabricating medical grade electrochemical cells for implantable medical devices (IMDs). BACKGROUND OF THE INVENTION [0002] The invention relates primarily to coiled electrode type electrochemical cells. For example, a coil of an active material such as lithium (for an anode) is placed in an insulator cup formed of a polymer material prevents direct contact between the lithium anode and the typically metallic housing for the cell as well as the cathode active material. [0003] Unfortunately, the coiled electrode and the insulator cup itself are designed to occupy minimum space within the cell and thus possess dimensions that oftentimes result in damage during manual assembly. For example, the coiled electrode oftentimes includes a commercially available separator sheet or envelope around the electrode and the sheet easily sustains damage. Also, the coil itself...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M4/66H01M2/16H01M4/58H01M10/0587H01M10/38H01M50/409
CPCA61N1/375A61N1/378H01M2/0404H01M10/0587H01M2/18H01M4/661H01M10/049H01M2/16Y02E60/10Y02P70/50
Inventor AAMODT, PAUL B.HOKANSON, KARL E.BREIMON, STEPHANIE L.
Owner MEDTRONIC INC
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